Pressure equalizing assembly for stone breaking presses



G. A. MAYER March 14, 1961 PRESSURE EQUALIZING ASSEMBLY FOR STONE BREAKING PRESSES Filed Feb. 5, 958

2 U m w a a 1 .w a 4 I, fi w A@ O a |L Y W 2 d 070 F m 0 mm? 4 4 m 2 M 2 J I v A W! a a w m 3 v INVENTOR. 'eo/ qe A. Mayer ATRN PRESSURE EQUALIZING ASSEMBLY FOR STONE BREAKING PRESSES George A. Mayer, Miami, Okla, assignor to Miami Stone,

Inc., Miami, Okla a corporation of Oklahoma Filed Feb. 3, 1958, Ser. No. 712,735

- 2 Claims. (Cl. 125-23) This invention relates to concrete building block or stone breaking machines and more particularly to a pres-- a block breaking machine, an assembly for supporting the block or stone to be cut in such a manner that when the breaker is brought to bear upon the block, the pres sure thereon is equally distributed causing the block to be broken evenly along a predetermined line.

Another important object of this invention is to provide an equalizing assembly for a block breaker that will support the block in a position to be broken and which is also movable in a vertical plane relative to the block, and by reason of such movement of the parts thereof, maintains the face of the block in a position perpendicular to the breaker as the latter brings pressure to bear upon the block.

Another object is to provide an equalizing assembly which yield-ably supports/the block in a position perpendicular to the breaker as pressure is exerted on the block by the breaker, and thus prevents fracturing or splitting of the block along a line other than that desired, thus 2,974,651 Patented Mar. 14, 1961 Q ce as best shown in Fig. 1 and broadly designated by the numeral 10. The block breaker consists of two pairs of vertical guides 12, 12a and 14 and 14a having therebetween, and interconnecting the guides a horizontal disposed cross beam 16. Pivotally suspended from cross beam 16 by fluid piston and cylinder assemblies 18 is a vertically reciprocable device 20.

eliminating the problem of culls or'blocks that must be fact that the assembly is in turn provided with a. plurality of parts so associated and interconnected as to be freely movable one with respect to'the other in a number of. di-

. rectionst Many more minor objects :including details of. construction andnovel arrangement of parts will fbe'made clear or become apparent as the following specification progresses, referencebeing made to the accompanying drawing wherein: w

Figure 1 is a front elevationalf view of astone breaking press, having a pressure equalizing assembly made .inaccordance with my invention. 1

Fig. 2is aside elevational view thereon l i Fig. 3 isa eross-sectional "view takenalong lines of Fig. 1 parts being broken away'for clearness. e

, F ig. 4 is" a fragmentary detailed enlarged cross-sectional view taken along line 4'4 of Figil. p n f j,

Fig." 5 is a fragmentary 'en1arged,-cross sectional view taken a'long line 5 -5 of Fig. 3. v

' The pressure equalizing assembly Dev-ice 20 carries, through bearings 22 and 24, a shaft 26, upon the ends of which are mounted pinions 28 and 30 respectively. Pinions 28 and 30 are in mesh with racks 32 and 34 respectively, rack 32 being afiixed to guide 14 and rack 34 to guide 12. Said pinions 28 and 30 are continuously engaged by racks 32 and 34 during the vertical reciprocation of device 20 by assemblies 18, thus assuring that device 20 is constantly maintained in a horizontal position.

. A pair of cutters or breakers 40 and 42 are carried by device 20 for vertical swinging movement relative thereto by virtue of pivot pins 44. This floating movement of breakers 4t) and 42 when used in connection with an assembly 54, hereafter described, assures that the lower cutting edges thereof bear fully and squarely against the upper surface of block 52 to be cut as the assemblies 18 bring pressure to bear thereon through breakers 40 and 42. The aforementioned construction, with assembly 54, also enables the pressure of breakers 40 and 42 to be equally distributed along a predetermined line of block 52, insur- 7 ing a steady exertion of the pressure upon the block.

The pressure upon the block is stabilized by the provision of the equalizing assembly 54 disposed beneath the breakers 40, 42 in position to support block 52 as the same is being cut. Assembly 54 is supported by any suitable means such as bars 56 and 58. Since guides 12, 12a, 14 and 14a are secured to said assembly, the entire stone breaking press and equalizing assembly forms a single unit which may be placed upon any satisfactory surface for operation.

Assembly 54 consists of a case broadly designated as 60 of substantially rectangular shape and having a pair of side walls 62 and 64 and a pair of end walls 66 and 68. Said end walls 66 and 68 are secured to supporting bars 56 and 58 respectively and to guides 12, 12a and 14 and 14a and thus maintain the base in a fixed, rigid position with regard to its support and the stone breaking press 10.

Carried by base 60 is a primary frame 70 consisting of a pair of identical elements 72 and 74 substantially equal in length to sides 62 and 64 of base 60. Elements 72 and 74 are horizontally disposed on the inner side of side walls 62 and 64 of base 60 respectively and are maintained in place by means of a rod 76 which extends through side walls 62 and 64 at substantially the center thereof as well as through elements 72 and 74 at the center of the latter. Since elements 72 and 74 are pivotable about rod 76, they are capable of vertical swinging movement relative to the base 60. Elements 72 and 74 are interconnected for swinging movement together as a unit by pins 78 and 80 which extend between said elements a I points substantially equidistant from rod 76.

Carried by pins 78 and 80 of primary frame 70 are a pair of identical secondary frames 82 and 84, disposed between elements 72 and 74. and adapted for vertical swinging movement with respect thereto. Each of the secondary frames 82 and 84 consists of va pair of mem- It is to be noted that pins-78 and 80 are parallel with rod 76.

. 170. hereinafter described It" is'=to be 'further" noted that elements 72 and 74 are horizontally spaced from sidewalls 62 and 64 with both is designed for use in iconjunc'tion with 'agblo'ck' breaker I the upper and'.lower edgesthereof raised slightly; above the corresponding edges of elements 62 and 64 in order that there may be sufficient room for said elements to swing vertically without striking bars 56 and 58 or underlying support means therefor. The same is true. of members 8692 of secondary frames 32 and 84, the upper and lower edges of said members being disposed slightly above the corresponding edges of elements 72 and 74 in order that said members may be allowed even a greater degree of vertical swinging movement about pins 78 and 80 and relative to primary frame 70. By this stairstep relationship of the base 69, the primary frame 76 and the secondary frames 82, 84, as best shown in Fig. 4, it can be seen that when block 52 is placed upon the assembly 54 the pressure of the block 52 upon the assembly is equalized by means of the secondary frames 82, S4, and the block 52 is leveled with respect to the assembly 54. Then, when the pressure of breakers 4i} and 42 is brought to bear upon the block 52 as it is being supported by the assembly 54, any unequal pressure is compensated for by the vertical movement of primary frame 70 and the block 52 is supported in a position that the pressure thereon is equalized. Block 52 is therefore, split along a predetermined line.

As shown in the form set forth in the drawing, each frame 82 and 84 carries a pair of elongated block-supporting bars 94- and 6, and 8 and respectively, the bars being normally disposed in a plane parallel with rod 76 and pins 78 and 80, with the upper surfaces thereof normally coplanar with the upper edges of secondary frames 82 and 84. The bars 9410() are mounted on the members 86-92 of secondary frames 82 and 84 by means of arms 1G2 and 104 as shown in Fig. 4, each member 86-92 having a pair of such arms thereon, and each bar 94--1Nl being yieldably mounted upon a pair of opposed arms by springs 196 and 108 as best shown in Fig. 4. Coil springs 106 and 108 surround a pair of stems litl and 112 extending downwardly from each of the supporting bars 94-109, and the stems of each bar extend through a suitable opening in the arm therebeneath. Thus, each of the block-supporting bars 94100 is spring biased for vertical reciprocation relative to the secondary frame member upon which it is mounted.

For supporting the blocks 52 as they are moved onto the assembly 54 there is provided a pair of outwardly extending fingers 114 and 116 which have fiat upper surfaces along which the blocks 52 may be easily pushed to place them in position for breaking, and on which a block being readied for breaking may be placed while the machine is in operation upon a preceding block. Further, to guide the block 52 as it is being pushed into place upon supports 94100 there is provided above pins 78 and 80 respectively, skids 118 and 120 which have inclined upper surfaces extending from the upper edge of the normally rear members 86 and 92 of secondary frames 82 and 8 4 to substantially the center of the inner side, of opposed members 88 and 90. These skids 118 and 120 provide protection for pins 78 and 80; add stability to sec- Still further, since the secondary frames 82 and 84 are permitted to swing relative to the primary frame 70, and since the parts 86, 88, 9t and 92 are all permitted to swing independently of each other, the bars 94-100 will always firmly engage the lower face of the slab throughout the lengths of the bars 94100. Consequently, since there is provided a firm engagement between the bars 9410i) and the lower face of the block 52, springs 106 and 108 are all responsive to the pressure that is indirectly exerted thereon from the breakers 49 and 42.

By virtue of such full equalization and flexibility of the components of the assembly 54 permitting the block or slab 52 to shift, not only fore and aft, but laterally, longitudinally thereof, conforming to the lowermost breaking edges of breakers 40 and 42, the latter will produce a cleavage or line of severance which is not only straight throughout the length of the slab 52, but is transversely straight, substantially perpendicular to the uppermost surfaces of the slab 52. At no time, therefore, will the slab 52 be at an angle to the breakers 40 and 42 when the latter strike the slab 52 such as to either cause the cleavage to form at an angle between the upper and lower surfaces of the slab 52, or cause such cleavage to form along an irregular line longitudinally of the slab 52 nor extend along a line that is not medially disposed and parallel with the forwardmost and rearmost longitudinal edges of the slab 52.

All of the above is the result of equalized pressure applied to the block 52 by the breakers 40 and 42 throughout the lengths of the lowermost breaking edges of both breakers.

Having thus described the invention, what is claimed 1. In a block breaker, a pressure equalizing assembly comprising a base; a primary frame carried by the base for rocking movement with respect thereto; a plurality of secondary frames carried by a primary frame for rocking movement with respect thereto, the axes of rocking movement of said secondary frames being substantially parallel with the axis of rocking movement of said primary frame; a block support carried by each secondary frame for vertical reciprocation relative to and including a plurality of horizontally spaced bars parallel with the axes of rocking movement of said primary and secondary frames; and means for supporting said block supports, said means including arms carried by said secondary frames and spring means interposed between said arms and said block supports.

. 2. In a block breaker, a pressure equalizing assembly comprising a base; a primary frame carried by the base for rocking movement with respect thereto; a. plurality 1 of secondary frames including a pair of horizontally ondary frames 82 and 84, and the inclined surfaces thereof facilitate the pushing ofa block onto the assembly.

The structure above described is particularly adapted for handling elongated, relatively narrow slabs, substantially coextensive in length with the primary frame to the action 'of'the breakers 40 and 42thereon about 4 rod 76 as an axis.

spaced members carried by the primary frame for rocking movement with respect thereto; a block support carried by each secondary frame for vertical reciprocation relative thereto, said block support spanning a distance between said members and being rockable therewith; and means for supporting said block supports, said means including arms carried by said secondary frames and spring means interposed between said arms and said block supports.

References Cited in the file of this patent UNITED STATES PATENTS 600,856 Brinkman Mar. 22, 1898 1,059,545 Kunze Apr. 23, 1913 2,753,861 Bode July 10, 1956 FOREIGN PATENTS 471,674 France Nov. 6, 1914 7 830,473 1952 Germany Feb. 4, 

